Today Disney and Pixar are announcing details for the film The Good Dinosaur, from which we’ve previously seen only concept art. Footage was shown today, which Peter described as “very beautiful, not very cartoony, almost like a segment from Fantasia.” The story is described as the biggest “what if?” ever — what if the asteroid that killed the dinosaurs missed Earth entirely?

The primary cast was also announced. The primary characters are a family of farming Apatosaurs, with John Lithgow as the father, Frances McDormand as the mother, Bill Hader and Neil Patrick Harris as brothers Forrest and Cliff, Judy Greer as Ivy, and Lucas Neff voicing the lead character Arlo.